The Gemtech 22 QDA adapter is specifically designed for all rimfire suppressors to utilize a quick and efficient attachment/detachment method. Threaded in 1/2x28 to mount on all standard rimfire threaded barrels, this 4-lug muzzle device provides the shooter the ease of attaching/detaching your suppressor in seconds. The 22 QDA adapter covers your .22LR and .22Mag needs. The QDA includes the adapter, muzzle device, and installation wrench.
Will this item work with the Griffin Checkmate?
It will work with any 22 suppressor that is threaded 1/2x28. As long as you have the threaded version of the Checkmate, you are fine. The QD version will not work with this adapter.